Note – Short-term travelers to the United States from Canada or Mexico may operate their own personal vehicles in the United States during their visit. Such vehicles are not subject to EPA emission standards and other requirements. Residents of Canada or Mexico or any other country who wish to bring their vehicles into the United States for extended periods of time should refer to Section 2.2.5 -- Temporary Vehicle Imports for Nonresidents found in Procedures for Importing Vehicles and Engines into the United States (EPA-420-B-10-027, July 2010).